Switch.



G. W. HART. SWTGH.

' APPLIOA'HON IT'ILED JULY 29, 1912,

1,058, 179. Pned Apr@ 8, 1913.

www 5 n ue nico@ @om .GM/mmf to extinguish the l-i 'connected in seriesF2., such as lamps. and a source of current the other is connected to acontact C van, ma a Para @alla ll. f ilejln @einem W. naar, or

'Mannraornnino coneau?, or narrare new senses".

R3, CNNECTCUT, A CORPRTIQN Gili' 'specification of Letters Patent.appneamaeiee any es, 1912.

Patented. Apr. 8. i913. serial No. 711,953.

.in connection with old lighting installationsl where a potential vWireis not readily a cccssibl g l lits within a hotel room ivhen-`theouterdoor is looked by one leaving'. lin old installations e., single poleswitch commonly employed for controlling' all the lightsivithiu a hotelroom, which single pole switch. is usuallyv located near the outsidedoor, so that. the cireuitfis accessible near the door, although nopotential circuitis usually accessible at that point. l have discovered,that if the local circuit containing the solenoid end ...local circuitcontroller ot the switch described in the application above mentioned iselectrically connected to the main switch terminalt so as to he in shuntto the main switch arm. that said switch mechanism'can be used tocontrol the lamps mi such old installations without the use of apotential circuit.

The following is a description of an our,

bodinentfoi" my invention. reference being hadl to the accompanyingdrawings7 in Which- Figure l shows a side elevatioi'i ofthe switch'embodying my invention. partly in diagram. -Fig Q shoivs a sideelevation oi the upper part of the switch. with the ing' showninsection. Fijo'. 3 shows a similar View With the parts in diilerentpositions. Fig. i shows a plan view. with the-cap removed. i

y Referring more particularlj.v to the dranvh ings. l fl are the mainswitch terminals With translating devices 3 by the conductors A isa mainsivitcli arn'i carried by but insulated j roni a 'core 6. AWhiehilslsurrounded by asolenoid One terniiual of the solenoid is connected tothe' terminal plate l'; While. I A conl engagement with the abutment ll.the con- 'tent ou one o1 its tact 8'v is connected by the conductor 9 tothe terminal plate 1, forming parts of a local circuit'in shuntl to saidsivitcli arm.` The' upper end of the by the upper jection 1G.

1241's a U-shaped detent movably mounted in the switch casing by a pin13. This deliinbs has a stud le; with Which one end l5 of a springsurrounding the pin lll cngagcls. the other end l5 engagiiug with tocause the dotcul l2 to more toward the projection i() and intoengagement. with the abutment il when the core is raised to itsuppermost position, as shown in Figs. l ancl- .The dctent l2 is providedwith a tail piece i6, which projects into the path of a portion l? of auactuator 18. The actuator. when free to move, returns to the l ion shownin Fig. 3, by reason of the spring ,t9 bearing,r against the pin 19.

surface of a notch in the prolilhen the actuator 1S is pushed inward towith thc alixniieut ll.

the position shown in Fig. 4, the portion 17 thereof 4passes beneath thetail Apiece 16, lifting.` it into the position shown in Fig. 52. Thismores the dctcnt l2 out of engagement; `so as to permit the core.together with the switch arn'i 5, to fall, with thc result that itselectrical conuecil'ion between the terminal plates l-l is bro (en. Thedctcnt then bears i surface oi the projection 10. so that the de-V tentheld iu vertical position, asshown in Fig. Mounted upon the pin i3between the limbs of the iJ-shaped detent l2 is a local circuitcontroller 20. carrying a con tact plate 2i insulated therefrom andadapted to electrically connect and disconnect the terminals SWS.spring-'Q2 surrounding the pin Vlf3 hasl one end QS bent so as to bearagainst the lc'l't hand vertical t'acc of the detentjl. while the otherend Q4 bears against the upper surface of the controller, With theresult that a yielding connection between the tivo is afforded, so thatthe detentl ,can be moved out of engagcnient iyith its abutment il, evenit' the controller is restrained yfrom moving, and the controllertendsjto move to closed position. Thecontroller has on itsv rear upperend a projection o'rhook 25;, which engages the right hond faceoftnedetent liso that mhenuthedtent la? i: in

core is provided with a 1 projection l0, having anabutment 1l formed iisthe casing so that the spring tends against the vertical llo localcircuit controller for said solenoid, said solenoid and said localcircuit controller beingkin Y a circuit controller normally tending toclose said local circuit, a detent for holding said switch arm inengagement with said terminals and normally tending to move towardholding position, and actuating means, said actuating means whenactuated engaging said detent so as to cause it to release said arm andholding said circuit controller in open position, and when innon-actuated position releasing said circuit controller and being out ofoperative engagement with said detent.

L). ln .a device of the character described, the combination of circuitterminals, a switch arm for electrically connecting the same normallytending to move out of engagement therewith, a core connected to saidswitch arm, a solenoid for said core, a local circuit controller inseries with said solenoid and in shunt Awith said switch terminals, adetent for holding said switch arm in closed position, and an actuatorfor simultaneously controller in open position when in actuated positionand free from said detent and controllerivhen in non-actuated position.

J-i. ln al device of the character described, the combination of circuitterminals, a switch arm for electrically 'connecting the same normallytending to move out of engagement therewitl1,'a core connected to saidswitch arm, a solenoid for said core, a local circuit controller inseries With said solenoid and in shunt to said switch terminals, adetent for holding said switch arm in closed position, an actuator forsimultaneously releasing said detent and restraining said controller inopen position when in actated position and tree from said detent andcontroller when in non-actuated position, and translating devices, saidswitch 'arm and controller being in series with said translating devicesbut not with each other.

GERALD W. HART. lVitnesses H. A. HART, S. MOODY.

